klionnext.blogg.se - Bitmessage white pride

Bitmessage white pride generator#
Bitmessage white pride registration#

Operating temperature range from -40☌ to +85☌.Overdrive mode boosts communication speed to 125kbps.

Bitmessage white pride generator#

On-chip 16-bit CRC generator for safeguarding data transfers.256-bit scratchpad ensures integrity of data transfer.Device can operate as a roaming iButton device or as coprocessor for a host computer.On-chip 512-bit SHA-1 (FIPS 180-1, ISO/IEC 10118-3) engine to compute a 160-bit Message Authentication Codes (MAC) and generate page secrets.

Secrets are write-only and have their own individual write-cycle counters.

Eight memory pages with individual 64-bit secrets and 32-bit read-only nonrolling-over page write-cycle counters.

4096 bits of read/write nonvolatile (NV) memory organized as 16 pages of 256 bits each.

Accessories permit the DS1963S to be mounted on almost any surface including plastic key fobs, photo-ID badges and printed circuit boards. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the DS1963S to be easily used by human operators. The durable MicroCan package is highly resistant to environmental hazards such as dirt, moisture, and shock.

Bitmessage white pride registration#

Each DS1963S has its own 64-bit ROM registration number that is factory lasered into the chip inside to provide a guaranteed unique identity for absolute traceability. This process ensures data integrity in an environment that does not provide a reliable electric contact. After the data has been verified, a copy scratchpad command will transfer the data to main memory. Data is first written to the scratchpad from where it can be read back. The DS1963's scratchpad is also used for feeding data segments to the SHA-1 engine or receiving/comparing message authentication codes. The DS1963S, like other SRAM-based iButton devices, has an additional memory area called the scratchpad that acts as a buffer when writing to the main memory. The DS1963S is also intended to function as a coprocessor that assists the host in computing signatures, using a secure signing secret, when writing back the new balance to a roaming device after a purchase.

Using the TMEX ™ file format (see Application Note 114) a single DS1963S can serve up to four independent applications, such as secure change purses for electronic payment at local transit systems, pay phones, parking systems or vending machines. Data is transferred serially via the 1-Wire ® protocol, which requires only a single data lead and a ground return. An integrated 512-bit SHA-1 engine can be activated to compute 160-bit message authentication codes (MAC) based on information stored in the device. Its NV memory acts as a localized database for public as well as protected data belonging to the owner of the device and the environment in which it is used.

The iButton ® monetary device (DS1963S) with SHA-1 Function is a rugged 4kbit read/write data carrier that can be easily accessed with minimal hardware.